Viking Therapeutics Announces Closing of Concurrent Upsized Offerings of Common Stock and Convertible Senior Notes, Including Full Exercise of Underwriters' Options to Purchase Additional Shares of Common Stock and Convertible Senior Notes

Gross Proceeds to Viking Approximately $575 Million

SAN DIEGO, Sept. 28, 2026 /PRNewswire/ -- Viking Therapeutics, Inc. (Nasdaq: VKTX), a clinical-stage biopharmaceutical company focused on the development of novel therapies for metabolic and endocrine disorders, today announced the closing of its concurrent upsized public offerings of 9,035,714 shares of common stock, at a public offering price of $35.00 per share, and $258.75 million aggregate principal amount of 2.00% convertible senior notes due 2032 (the "notes"), which included the full exercise by the underwriters of the common stock offering of their option to purchase an additional 1,178,571 shares of common stock, and the full exercise by the underwriters of the note offering of their option to purchase an additional $33.75 million aggregate principal amount of notes. The gross proceeds to Viking from the offerings were approximately $575.0 million, before deducting underwriting discounts and commissions and offerings expenses.

Morgan Stanley, J.P. Morgan, Jefferies, Leerink Partners and William Blair acted as joint book-running managers for the note offering. Morgan Stanley, J.P. Morgan, Jefferies, Leerink Partners, William Blair and Raymond James acted as joint book-running managers for the common stock offering. Oppenheimer & Co. acted as lead manager and Canaccord Genuity, H.C. Wainwright & Co., B. Riley Securities, Maxim Group LLC and Laidlaw & Company (U.K.) Ltd. acted as co-managers for the common stock offering.

Viking estimates that the aggregate net proceeds from the offerings were approximately $547.8 million, after deducting the underwriting discounts and commissions and Viking's estimated offering expenses. Viking intends to use the net proceeds from the offerings for the continued clinical development, advancement and commercialization of its VK2735 program, the continued clinical development and advancement of its VK3019 program and for other general research and development, working capital and general corporate purposes.

The offerings were made pursuant to an effective shelf registration statement on file with the Securities and Exchange Commission (the "SEC"). Each offering was made only by means of a prospectus supplement relating to that offering and an accompanying prospectus. An electronic copy of the final prospectus supplement for each offering, together with the accompanying prospectus, is available on the SEC's website at www.sec.gov. Alternatively, copies of these documents can be obtained by contacting: Morgan Stanley & Co. LLC at 180 Varick Street, 2nd Floor, New York, New York 10014, Attention: Prospectus Department; or J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by email at [email protected] and [email protected].

This press release does not constitute an offer to sell, or the solicitation of an offer to buy, any securities referred to in this press release, nor will there be any sale of any such securities, in any state or other jurisdiction in which such offer, sale or solicitation would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction.

Viking Therapeutics, Inc. is a clinical-stage biotechnology company advancing a next-generation portfolio of therapies for obesity and metabolic disease. Guided by deep expertise in metabolic biology and rigorous science, Viking is developing innovative treatments to help people achieve meaningful, lasting health improvements by treating obesity first. The company's lead program, VK2735, is a dual glucagon-like peptide 1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) receptor agonist in development in both subcutaneous and oral formulations for obesity. VK2735 is currently being evaluated in Phase 3 clinical studies for obesity, along with maintenance dosing strategies designed to support long-term weight management. Viking is also advancing additional obesity programs, including VK3019, an amylin receptor agonist, VK2809, an orally available thyroid hormone receptor beta agonist for metabolic and liver disease, and VK0214 for the rare genetic disorder X-linked adrenoleukodystrophy (X-ALD).

This press release contains forward-looking statements regarding Viking Therapeutics, Inc., under the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995, including statements about the expected amount and intended use of the net proceeds. Forward-looking statements represent Viking's current expectations regarding future events and are subject to known and unknown risks and uncertainties that could cause actual results to differ materially from those implied by the forward-looking statements. Among those risks and uncertainties are risks described under the caption "Risk Factors" in the final prospectus supplements for the offerings and risks relating to Viking's business, including those described in Viking's most recent periodic reports filed with the Securities and Exchange Commission, including Viking's Annual Report on Form 10-K for the year ended December 31, 2025, and subsequent Quarterly Reports on Form 10-Q, including the risk factors set forth in those filings. The forward-looking statements included in this press release speak only as of the date of this press release, and Viking does not undertake to update the statements included in this press release for subsequent developments, except as may be required by law.